MATHEMATICS MIDDLE SCHOOL

If f(x) = x2 - 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0?OOOO
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Answers

Answer 1
Answer:

Answer:

x^2+4x+4

Step-by-step explanation:

f(x)=x^2-2x, g(x) =6x+4

(f+g)(x)=f(x)+g(x)

(f+g)(x)=x^2+4x+4

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Which ratio correctly compares 60 mm to 45 cm?

Answers

60 mm converts to 6 centimeters.
the ratio of 6 to 45 can be simplified to 
2 : 15

Which describes the sequence of transformations used to obtain the image (triangle A’) from the pre-image (triangle A)?dilation by a scale factor of 2, then rotation of 180° about the origin
dilation by a scale factor of 2, then a reflection over the x-axis
dilation by a scale factor of 1/2, then a rotation of 180° about the origin
dilation by a scale factor of 1/2. then a reflection over the x-axis

Answers

Answer:

C : dilation by a scale factor of 1/2, then a rotation of 180° about the origin

Step-by-step explanation:

Joe is researching the cost of going to college. He sees the table shown. Joe wants to create a mathematical model, f(x), where x represents the number of academic years since 1979-1980, to predict future cost of tuition and fees using data in the table.

Which type of function will most closely match the data?
A) decreasing linear function
B) increasing linear function
C) exponential decay function
D) exponential growth function

Answers

Answer:

D) Exponential Growth Function

Step-by-step explanation:

This is because in a linear equation, there is a constant 'slope' of how something increases like a specific amount but in this equation, the growth is by a specific percentage which allows for a difference in the amount each year. For example, a linear function would be if it increased by four dollars every year, so 2, 4, 6, 8,etc. But a exponential function would be like if it increased by for percent each year, so 2, 2.16, 2.25, 2.34, etc.

Answer:

D) exponential growth function

Step-by-step explanation:

Please help im almost done​

Answers

Answer:

1/4

Step-by-step explanation:

the numerator is 12 because there are 12 possible outcomes.  The numerator is 3 because there are 3 numbers in this set that are greater than 9.  You get 3/12 which then simplifies to 1/4

The mean change for Monday through Friday is -0.01 inch. What is the change in the barometric pressure on Friday? Chart is below.

Answers

Answer:

(-.05 + .09 - .04 - .08 + x)/5 = -.01

(-.08 + x)/5 = -.01

-.08 + x = -.05

x = .03

The change in the barometric pressure on Friday is .03.

Make a box-and-whisker plot of the data.Average daily temperatures in Tucson, Arizona, in December:
67, 57, 52, 51, 64, 58, 67, 58, 55, 59

Answers

Answer:

Step-by-step explanation:

First, we'll arrange the number sequence from lowest to highest - 0,50,50,51,52,55,57,57,58,58,58,58,59,60,62,63,64,66,67,67.

Second, we'll find the median Q2 - (58+58) / 2 = 58

Third, we'll take the middle numbers before the median as our lower quartile Q1 - (52+55) / 2 = 53.5

Fourth, we'll take the middle numbers after the median as our upper quartile Q3 - (62+63) / 2 = 62.5
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